"Night and Day" is centered around the mixed emotions found in traveling. Characters in the film are Sung-nam Kim, an artist selected by the Korean government that escaped from Seoul and currently resides in Paris, student Yoo-jung Lee studying painting in Paris, Sung-in Han waiting for her husband Sung-nam Kim, and North Korean Kyeong-su Yun also studying in Paris. Written by Eun-wook at Luna Park

A fugitive artist from Korea escapes to Paris in order to avoid a stiff prison sentence, only to find his love for the wife he left behind counterbalanced by his passion for the City of Lights. Sung-nam is a successful painter who was caught drunkenly smoking marijuana at a small gathering. Now threatened with an extended stay in jail, Sung-nam packs his bags and boards a plan bound for Paris. Once there, he settles down in a ramshackle hostel run by an older Korean man and located in the 14th Arrondissement. There''s precious little for Sung-nam to do in Paris, so he spends most of his time aimlessly wandering along the Seine and through the city parks. Though he eventually happens upon his ex-girlfriend Min-sun, their current connection is tenuous at best and he can''t help but think about the wife in Korea that he left behind. Later, after befriending a pretty art student named Hyun-ju and her flatmate Yu-jeong, Sung-nam becomes hopelessly smitten with the affectionate stranger.